Guiding device for the belts of the



Jan. 29, 1935. F. CASABLANCAS, JR 1,989,347 G'UIDING DEVICE FOR THE BELTS OF THE DRAWING MECHANISMS WITH ENDLES S BELTS Filed May 29, 1953 Inz/E nZb? Riv-main @saZZa'ncad 1Z1 Patented Jan. 29, 1935 UNITED STATES PATENT OFFICE GUIDING DEVICE FOR THE BELTS OF THE I ggleltglNG MECHANISMS WITH ENDLESS Fernando Casablancas, In, Sabadell,- Spain, as-

signor to Fernando Casablancas, Sabadell, Spain I Application May 29, 1933, Serial No. 673,528

In Japan June 13,1932

2 Claims. (Cl. 19-131) In the high draught mechanisms for the spin- The two plates 1 are arranged separated one ning of cotton in which the rovings are conducted from the other at a distance slightly greater than by means of endless belts, there are already in the width of the bodies 2, 3 of the cylinders and the use arrangements or devices for guiding these width of the belts 6, 7 but'sufilciently adjusted on 5 belts made up of two plates of steel or other mathe cylinders in order that the belts 6-, 7 although terial duly separated at a distance slightly when these slip sideways as is shown in Figure greater than the width ofthe endless belts and 2, cannot introduce themselves between the cylinconveniently joined together forming a cage or ders and the plates 1.

framework. On using belts of greater width than the nor- 10 This invention refers to improvements intromal as occurs for example on equipping with high duced in these guiding devices, with which there draught mechanisms certain types of mule frames is obtained a better guidance of the endless belts of three or four ends per cylinder (Bolton type) and which in additionexercise other functions or in the speed or fly frames there occurs that which improve the working of the machine. these very wide belts which revolve under pressure These improvements consist in the form and on the cylinder, have a. great tendency to slip arrangement of the plates of guiding framework, towards one side or another. and exert a considin the arrangement of flanges in the side plates erable strain on the plate of the framework, in

- to prevent the slipping off of the belts and in the such a manner that sometimes they even bend or union of these side plates by means of two cross deform the plate in which case the belt gets under pieces, one of which limits the swinging movethe plate and prevents the proper working of ment of the sliveror roving, whilst the other acts the machine. In order to absolutely prevent this isacleaner of the lower belt. happening thereis adopted the arrangement In the attached drawing thereis shown several shown in Figures 3 and 4 in accordance with forms of execution of the improvements of this which the plates 1 present on their interior face invention. and on the edge of the cut by which they fit on Figures 1 and 2 represent respectively a side the throat 4 of the lower cylinder 2, a projecting elevation and a cross section through the line part or flange 8 curved in such a way that this 1III of the Figure l, of a pair of cylinders with adapts itself on the collar 4 of the cylinder, the their corresponding endless belts and the thickness of said flanges corresponding to the framework of the belts. difference in radius-of the part 4 and the part 2 Figs. 3 and 4 represents longitudinal section of the cylinder. through the line III-III and a' cross section These flanges 8 contribute to flt the guiding through the line IV-IV of a guide framework. device on the cylinder but their principal object provided with interior flanges. is that on the lower belt 6 sliding sideways as is Figure 5 is a side elevation of a framework with shown in Figure 4, the edge of the belt remains th k join rr nged to limit the on thefiange 8 and as this forms an integral swinging movement of the roving and Figure 6 is part of the plate 1 there is no possibility of the a back elevation of this same framework mounted belt bending itself and getting between the plate on the cylinders and the belts and 1 and the cylinder 2.

40 Figures '1 and 8 are respectively a side view In practice it is not necessary to arrange these Partly i Section ande nt vation l king flanges 8 except for the lower belt, for as the in the direction of the arrow V111 of a guiding top cylinders'are' loose and only act by pressure framework with the lower crosspiece which acts on the straps or belts, the difference in diameter 88 8- b lt cl erbetween the thick part of the cylinder and the A i s n in the Figures 1 n 3 he guidin throat or reduced part of the same may be made device is constituted by two side plates 1 of sheet sufllciently big to prevent the belt introducing m t l onv n ntly Joined g l rmi a itself between the cylinder and the plate. On cage or framework. These side plates 1 are the other hand in the lower cylinders as all the adapted to the collars or parts of lesser diameter cylinders of the machine are joined together 4, 5 of the cylinders 2, 3 and encircle laterally forming a bar and receive their movement from almost completely the whole formed by the bodies one of the heads of the machine it is not possible or parts of greater diameter 2, 3 of these cylinders to reduce very much the diameter of the throats and by the belts 6, '7 applied upon them, in this 4 in order to avoid the danger of breaking or way preventing the introduction of fiufl ordust twisting same. 59 between the belts and the cylinders. The union of the two side plates is eflected by means of a cross piece 9 arranged in the back part of the framework, as is seen in Figures 5 and 6. This joining piece 9 is of a relatively big height and has on the top a cut or notch 10 which remains precisely in front of the contact line 11 of the two belts 6, '1. This cut 10 is prolonged towards each side up to a certain distance from the corresponding side plate 1 and the vertical edges 12 of. this cut constitute stops which limit the transversal movement of the sliver on entering the pair of endless belts. In this way there is avoided that the sliver in its transversal movement may introduce itself in the small spaces remaining between the plates and the body of the cylinders and in this way stopping the working of the mechanism.

This union of the two plates 1 is consolidated by arranging in the lower part of the plates another crosspiece 13 as is seen in Figures 7 and 8. This crosspiece 13 is arranged in such a way that the outer surface of the lower belt rubs strongly against the edge of the crosspiece which in this manner acts as a belt cleaner, as the fluff and loose fibres which have adhered to the belt separate themselves by this rubbing against the cross piece 13 and meet on the back face of same as is seen in Figure 7 until they fall on the table or rail of the machine from whence they are withdrawn by the operative.

In the present application the bar or crosspiece 13 is necessarily provided with a sharp edge against which the belt rubs, as the rubbing of the belt against this sharp edge is precisely what causes the fibres adhered to the belt to fall from the same, and to accumulate behind the crosspiece 13. With reference to this action I desire to have it noted that the fibres do not accumulate in front of the bar 13 as it appears they ought to do, but precisely behind the bar in the manner shown in Figure 7. This is an effect which as yet is not well explained, but the result undoubtedly proved in practice that with this crosspiece 13 the lower belt is always kept clean, and that the fibres which had adhered to the lower belt tend to accumulate behind the crosspiece 13.

This arrangement makes it unnecessary to use clearers for the lower belts which have always resulted very diflicult in manipulation for removing and cleaning.

The arrangement described of this crosspiece 13 has in addition other advantages when one thread is'obtained from two rovings. It often happens in such a case that one of the two rovings breaks whilst the other continues being spun and the result is the production of a thread the half of the thickness it is desired to obtain. If revolving. underclearers are used when one of the rovings breaks this accumulates around the clearer and as these clearers are not easily visible it is diiilcult for the operator to note that one of the rovings has broken. On the other hand on using as a clearer the crosspiece 13 in the way described, the broken roving is efliciently separated from the lower belt and falls upon the rail of the machine and in this way the operative immediately notes that the roving has broken.

This arrangement of the cleansing crosspiece 13 is not necessary for the top. belts as these are cleaned already by the top clearers and as these are in full view of the operative any accumulation of roving is easily seen on them.

I claim: 7

1. In a guiding device for the endless belts of drawing mechanisms having upper and lower cylinders provided with diametrically reduced throat and enlarged portions, the arrangement of two side plates which aremounted adjacent to the throat portions of thelower. cylinders that move the belts, and are likewise placed close to the enlarged portions of these cylinders; and the arrangement on the interior face of each side plate, of a curved flange shaped in such a way that it adapts itself on the throat of the lower cylinder and whose top edge remains at the same level as the surface of the central part of the cylinder in such a way that if the lower belt slips sideways it passes over this flange and absolutely prevents same introducing itself between 'the plate and the cylinder.

2. In a guiding device for the endless belts of drawing mechanisms having upper and lower cylinders provided with diametrically reduced throat and enlarged portions, the arrangement,

of two side plates which are mounted adjacent to the throat portions of the lower cylinders that move the belts, and are likewise placed close to the enlarged portions of these cylinders to prevent the belts slipping between the cylinders and the side plates, and the employment of a supplementary crosspiece between the two side plates, arranged in the lower part of these plates, the said crosspiece having a downwardly projecting rear wall with its outer ends bent slightly whereby the upper end of the crosspiece presents a sharp edge to engage the outer face of the lower. endless belt and to coact with the downwardly projecting wall to keep the lower belt free from fibres.

FERNANDO CASABLANCAS, JR. 

